Question

What is the correct order of processes in the accretion of planetesimals?

Masses of matter form around dust grain, masses of matter collide, and atoms and molecules are added to dust grain.
Masses of matter collide, masses of matter form around dust grain, and atoms and molecules are added to dust grain.
Atoms and molecules are added to dust grain, masses of matter form around dust grain, and masses of matter collide.
Masses of matter collide, atoms and molecules are added to dust grain, and masses of matter form around dust grain.​

Answer 1

c

Step-by-step explanation:

Answer 2

Atoms and molecules are added to dust grain, masses of matter form around dust grain, and masses of matter collide.

Step-by-step explanation:

Planetesimals are the foundation or fundamentals of planet formation. The mode of the formation is called accretion. In this process, dust grains or particles mixes with atoms and molecules to form a massive mass which later coalesce or collide to form planets.

The size of the planet formed is determined by the amount of masses of matter that collide.